4563521 has 2 divisors, whose sum is σ = 4563522. Its totient is φ = 4563520.

The previous prime is 4563487. The next prime is 4563523. The reversal of 4563521 is 1253654.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4431025 + 132496 = 2105^2 + 364^2 .

It is a cyclic number.

It is not a de Polignac number, because 4563521 - 2⁶ = 4563457 is a prime.

It is a Sophie Germain prime.

Together with 4563523, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (4563523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2281760 + 2281761.

It is an arithmetic number, because the mean of its divisors is an integer number (2281761).

Almost surely, 2^4563521 is an apocalyptic number.

It is an amenable number.

4563521 is a deficient number, since it is larger than the sum of its proper divisors (1).

4563521 is an equidigital number, since it uses as much as digits as its factorization.

4563521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 26.

The square root of 4563521 is about 2136.2399209827. The cubic root of 4563521 is about 165.8695568847.

The spelling of 4563521 in words is "four million, five hundred sixty-three thousand, five hundred twenty-one".